Homework Help: physics

Posted by sh on Wednesday, December 16, 2009 at 12:07pm.

An artificial satellite placed into earth's orbit has a mass of 1250kg. It travels at an average distance of 222.5km above the surface of the earth. The radius of the earth is 6370km. What acceleration due to gravity does the earth give the satellite?

I know to find the distance you add both the kms together.
a=g
a=6.593x10^6 m?

thanks in advance

physics - bobpursley, Wednesday, December 16, 2009 at 12:27pm
acceleration=GMe/(re+alt)^2
physics - sh, Wednesday, December 16, 2009 at 12:35pm
acceleration=[(6.67x10^-11)(1250kg)]/(6.593x10^6)^2=1.92x10^-21

Are the numbers plugged in correctly? The answer seems off.
physics - sh, Wednesday, December 16, 2009 at 12:43pm
nevermind, got it, thanks.

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